DS4424

更新时间： 2024-02-26 08:08:33

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
10页	223K
描述
Two-/Four-Channel, I2C, 7-Bit Sink/Source Current DAC

阅读下载

获取价格

技术参数
数据手册

如果您发现信息不准确，欢迎纠错

DS4424 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	DFN
包装说明：	HVSON, SOLCC14,.12,16	针数：	14
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	Factory Lead Time：	6 weeks
风险等级：	5.41	最大模拟输出电压：	4.75 V
最小模拟输出电压：		转换器类型：	D/A CONVERTER
输入位码：	BINARY	输入格式：	SERIAL
JESD-30 代码：	S-XDSO-N14	JESD-609代码：	e3
长度：	3 mm	最大线性误差 (EL)：	0.7812%
湿度敏感等级：	1	位数：	7
功能数量：	1	端子数量：	14
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	UNSPECIFIED	封装代码：	HVSON
封装等效代码：	SOLCC14,.12,16	封装形状：	SQUARE
封装形式：	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	峰值回流温度（摄氏度）：	260
电源：	3/5 V	认证状态：	Not Qualified
座面最大高度：	0.8 mm	子类别：	Other Converters
最大压摆率：	0.25 mA	标称供电电压：	3.3 V
表面贴装：	YES	温度等级：	INDUSTRIAL
端子面层：	Matte Tin (Sn)	端子形式：	NO LEAD
端子节距：	0.4 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	30	宽度：	3 mm
Base Number Matches：	1

DS4424 数据手册

Two-/Four-Channel, I C, 7-Bit Sink/Source

Current DAC

I C Slave Address

Detailed Description

The DS4422/DS4424 respond to one of four I C slave

The DS4422/DS4424 contain two or four I C adjustable

addresses determined by the two address inputs, A0

and A1. The address inputs should be connected to

current sources that are each capable of sinking and

sourcing current. Each output (OUT0, OUT1, OUT2, and

OUT3) has 127 sink and 127 source settings that can be

either V

or ground. Table 1 lists the slave addresses

determined by the address input combinations.

Table 1. Slave Addresses

SLAVE ADDRESS

controlled by the I C interface. The full-scale ranges

and corresponding step sizes of the outputs are deter-

mined by external resistors, connected to pins FS0, FS1,

FS2, and FS3, that can adjust the output current over a

4:1 range. Pins OUT2, OUT3, FS2, and FS3 are only

available on the DS4424.

(HEX)

GND

20h

60h

A0h

E0h

The formula to determine R (connected to the FSx

pins) to attain the desired full-scale current range is:

GND

Equation 1:

/DS24

16 × I

RFS

× 127

Memory Organization

To control the DS4422/DS4424’s current sources, write

to the memory addresses listed in Table 2.

Where I is the desired full-scale current value, V

RFS

the R voltage (see the DC Electrical Characteristics

table), and R is the external resistor value.

Table 2. Memory Addresses

To calculate the output current value (I

) based on the

OUT

corresponding DAC value (see Table 1 for corresponding

memory addresses), use equation 2.

MEMORY ADDRESS

CURRENT SOURCE

(HEX)

Equation 2:

F8h

OUT0

OUT1

OUT2*

OUT3*

F9h

FAh*

DAC Value(dec)

× I

OUT

127

FBh*

On power-up the DS4422/DS4424 output zero current.

This is done to prevent them from sinking or sourcing an

incorrect amount of current before the system host con-

troller has had a chance to modify the device’s setting.

*Only for DS4424.

The format of each output control register is given by:

As a source for biasing instrumentation or other circuits,

the DS4422/DS4424 provide a simple and inexpensive

MSB

LSB

current source with an I C interface for control. The

adjustable full-scale range allows the application to get

the most out of its 7-bit sink or source resolution.

Where:

When used in adjustable power-supply applications

(see Typical Operating Circuit), the DS4422/DS4424 do

not affect the initial power-up voltage of the supply

because they default to providing zero output current on

power-up. As the devices source or sink current into the

feedback-voltage node, they change the amount of out-

put voltage required by the regulator to reach its steady-

POWER-ON

DEFAULT

BIT NAME

FUNCTION

Determines if DAC sources or

sinks current. For sink

S = 0; for source S = 1.

Sign

Bit

7-Bit Data Controlling DAC

Output. Setting 0000000b

outputs zero current regardless

of the state of the sign bit.

state operating point. Using the external resistor, R , to

set the output current range, the DS4422/DS4424 pro-

vide some flexibility for adjusting the impedances of the

feedback network or the range over which the power

supply can be controlled or margined.

Data

0000000b

_______________________________________________________________________________________

1...3 4 567 8 9 10

下载PDF

与DS4424相关器件

型号	品牌	描述	获取价格	数据表
DS4424EVKIT	MAXIM	Fully Assembled and Tested	获取价格
DS4424N+	MAXIM	Two-/Four-Channel, I2C, 7-Bit Sink/Source Current DAC	获取价格
DS4424N+T&R	MAXIM	D/A Converter, 1 Func, Serial Input Loading, 3 X 3 MM, 0.80 MM HEIGHT, ROHS COMPLIANT, TDF	获取价格
DS4424N+T&R	MAXIM	Two-/Four-Channel, I2C, 7-Bit Sink/Source Current DAC	获取价格
DS4424N+TR	MAXIM	Two-/Four-Channel, I2C, 7-Bit Sink/Source Current DAC	获取价格
DS4425	MAXIM	106.25MHz/212.5MHz/425MHz Clock Oscillators	获取价格

产品中心

服务支持

精选活动

关于我们

帮助中心

DS4424

DS4424 技术参数

DS4424 数据手册

与DS4424相关器件

与DS4424相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

DS4424

DS4424 技术参数

DS4424 数据手册

与DS4424相关器件

与DS4424相关文章

您还可以找

您在本页遇到什么问题？